HVHP oil pump. Standard cover

With stock style cover: Feed & return holes in stock location. This S&S High Volume High Pressure (HVHP) oil pump was designed for, and used on all, S&S 4-1/8" bore Super Sidewinder Plus engines. The SSW+ engines are equipped with piston cooling jets that spray oil on the bottom of the pistons. This pump was designed to supply enough oil for the jets, and the rest of the engine. Although the outside is similar to the regular S&S billet pumps, the inside is different. Amongst others wider gears are used.